last night first lady michelle obama delivered an impassioned personal tribute to her husband. >> a show of sisterhood from democrats. the unmistakable message, we are the party of women, whose votes will outnumber men. give the woman who calls herself america's mum in chief. >> i can honestly say when it comes to his character and convictions and heart, barack obama is still the same man i fell in love with him, because for him success is not about how much money you make. it is about the difference you make in people's lives. >> of the white house he was watching with the couple's daughters. >> democrats are seeing michelle obama as a thoroughly modern woman who has had a career success and raise a family, someone who understands the struggles of the middle class because that is where she comes from. >> the same cannot be said for the romney's family. he is worth $200 million and once joked that his wife owns a couple of cadillacs. ann romney brings her own star power. a survivor of breast cancer, she offers a more traditional appeal to women. >> we are the mothers, the wives, the big